My aunt and uncle made wills 30 years ago leaving their money to one another and then in equal shares to their nieces and nephews. Unfortunately my aunt has now died and her money has gone to my uncle. Can he now re-write his will, robbing relatives of what my aunt wished them to have?
Yes. Your uncle can make a new will. He can leave all he owns, including what he inherited from his wife, to whoever he likes. If your aunt wanted to ensure that the nieces and nephews would eventually receive what she owned, it would have been necessary to include some form of trust in her will.